38621642975 has 24 divisors (see below), whose sum is σ = 48305241600. Its totient is φ = 30630337920.

The previous prime is 38621642971. The next prime is 38621643059. The reversal of 38621642975 is 57924612683.

It is not a de Polignac number, because 38621642975 - 2² = 38621642971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38621642971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4914149 + ... + 4922001.

It is an arithmetic number, because the mean of its divisors is an integer number (2012718400).

Almost surely, 2^38621642975 is an apocalyptic number.

38621642975 is a deficient number, since it is larger than the sum of its proper divisors (9683598625).

38621642975 is a wasteful number, since it uses less digits than its factorization.

38621642975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9539 (or 9534 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 53.

The spelling of 38621642975 in words is "thirty-eight billion, six hundred twenty-one million, six hundred forty-two thousand, nine hundred seventy-five".